Bung



Patented Aug. lli, 1923..

HENRY nge. GEEsTE'NEEEGERgf-or- EosELEE, lNEW zrEnsirr,l Assrenon' BY MESNE" L "'AssrGNMEN'rs, .Tof -s'rnnnirRDI-DEVELOPMENT COMPANY, A conroRATIoN foE DELAWARE i w Buns.' l y L ABe it lmownthat I, HENRY'L. G. GERSTEN- BERGER, a citizen of the .United States, .residing at *.Rosel'le, inw-thejcounty of Union ..5 and tate of Ne\vJe,r,sey, haveinventedcertain newand useful Improvements in Bunge?,

of which the following is a specification: l

Barrels which are to ac t as containers for petroleum are usually subjected on the interior to a gluing treatment prior to being filled with the liquid. The glue is placed in the barrel, the barrel closed by a temporary bung, and the barrel is then rotated, usually mechanically, and the glue forms one of the 115 coatings necessary to prevent the petroleum from leaking through the staves of the barrel. At the same time, gases are formed within the barrel, which create a pressure sufficient to expel glue through any open- 2@ ings, such as worm holes, and thus a test for leaks in the barrel is afforded. T he temporary bungs which have hitherto been used have proved unsatisfactory, for the reason that they are frequently expelled from the barrels, particularly after they have been in use for. some time, with the consequence that the operating room soon becomes unsanitary, and particularly so because of the well known, objectionable qualities of glue.

My invention has for its object the provision of a bung whichis not expelled from the barrel under the conditions indicated above, and while the bung is of general application and not limited in its use to situations of this character, it is particularly applicable to such use.

Referring, now, to the drawings, in which I have shown one embodiment of my invention, Fig. 1 is a sectional view of a portion of a stave provided with a bung-hole in which a bung embodying my invention is shown in position, in side elevation; Fig. 2

is a sectional View through the Vbung and the Y support therefor, and showing the bung in its natural extended condition, and Fig. 3 is a similar sectional view at right angles Lo ,Figa 2, and showing the bung slightly compressed and its horizontal diameter correspondingly increased.

Referring, now, to the drawings, in which like reference characters indicatel like parts, 10 is a bung, hollow and globular in form and made of a flexible, yielding material, such as rubber. In practice, I have found that bung kconvenientlyl bemade about one-eighth rhof an inch .in thickness, though obviously this thickness may be yaried as conditions may require. Thev bung 1 10 engages a lconcave seat 11 formed in a support 12. The support is preferably cored out, asat 13, in order tok reduce the weight thereof, andis .preferably provided at its middle portion with a boss 14, in which is received a stem 15, and which, in theembooliment of my invention here illustrated, is secured to the boss in any desired manner. The stem 15 passes through openings 17 and 18 formed in the opposite sides of the globular member 10. A washer 19, provided with a concave seat to engage the ball 10, surrounds the stem 15 and is clamped against the globular member 10 by a nut 20` which is secured to the end of the stem 15.

In order to secure the bung in the substantially circular bung-hole of a barrel, the bung is placed in positionl within the hole, the nut 20 is then screwed home until the globular member 10 is compressed to such an extent, and its diameter thereby increased to such an extent, that it will tightly fit the bung-hole. The operator then places the globular member in the bung-hole, as indicated at 21 in Fig. 1, in the stave 22 andimparts to the supporting member a sharp blow, when the bung will assume the position shown in Fig. 1 and the globular member will engage the walls of the bung-hole when the bung has been properly adjusted, with sufficient friction to prevent its being expelled during the gluing operation, the rubber or similar material of which the bung is preferably formed being well adapted to make good frictional engagement with the walls of the bung-hole, the bung being preferably constructed and arranged toengage,`

at its greatest diameter, the wall surrounding the bung opening at a Apoint or line inter-V mediate thel edges of the openi-ng,fas shown in Fig. 1. It will, of course, be apparent that the diameter of'the bung 10 may be varied, within certain limits, to acronimodate itself to different size bungs, such as4 may result, for example, when barrels have'l been used for some time.V

What I claim and desire to secure by Letters Patent of the United States is:

1. A globular bung formed of flexible material, a support for the bung formed with a Ylo Aing the diameter' lbf-the bung K Y A V2. hollow globular bung formed of Hex'- `ilole materiaha snpport -lor the hung formed concave seat, and associated means for varywith `a concave lseat .for theV bung, andy asso,-

.ciatedvineans V.for varying the diameter lof the bung. v

.3. A' hollow globular bung formed of flexible :yielding material, a sup-port therefor formed with a concave vsurface Within which.

the bung is'adapted to be seated, a stem' projectingv'throngh the bung andA adapted to Vloe-"secured to vsaid support, yand means Vfor engaging the stem for compressing the-bung and thereby'varying the diameter thereof; 4.- A bung comprising a 'hollovvgloloular l ball formed of yielding material' and ar` ranged tov be inserted in the bunghole of a barrel, a support for the bung formed vvith .ein

a concavesurfaoe Within Which the bung is seated, a stem'- Vp`rojecti1`rgg r'omgsaidf'support Y through the bung; -a Washer received oni said Y Y stem Vand engaging the bung onthe opposite` side from thesupport-,land a z nut threaded to said stemgand engaging :saidsvvasher for varying the diameter of Said bung; i; l

5. A bung comprising avvhollovv globular rubberball and arranged to engage a bunghole ofaibarrelg'a Vsupport for the bung varying the' diameter Aof i 

